/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-sets/test_add-1.i


--------------------------------------------------------------------------------


This is Ultimate 0.2.1-bitabs-178dd20
[2021-01-06 16:22:08,528 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-01-06 16:22:08,532 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-01-06 16:22:08,595 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-01-06 16:22:08,595 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-01-06 16:22:08,600 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
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[2021-01-06 16:22:08,631 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2021-01-06 16:22:08,636 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-01-06 16:22:08,639 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-01-06 16:22:08,641 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-01-06 16:22:08,656 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-01-06 16:22:08,664 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-01-06 16:22:08,671 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-01-06 16:22:08,675 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-01-06 16:22:08,677 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-01-06 16:22:08,680 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-01-06 16:22:08,682 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-01-06 16:22:08,689 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-01-06 16:22:08,690 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2021-01-06 16:22:08,701 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-01-06 16:22:08,702 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-01-06 16:22:08,704 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-01-06 16:22:08,704 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2021-01-06 16:22:08,713 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2021-01-06 16:22:08,716 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-01-06 16:22:08,720 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf
[2021-01-06 16:22:08,777 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-01-06 16:22:08,777 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-01-06 16:22:08,783 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-01-06 16:22:08,783 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-01-06 16:22:08,783 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-01-06 16:22:08,784 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-01-06 16:22:08,784 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-01-06 16:22:08,784 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-01-06 16:22:08,784 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-01-06 16:22:08,785 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-01-06 16:22:08,786 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-01-06 16:22:08,786 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-01-06 16:22:08,787 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-01-06 16:22:08,787 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-01-06 16:22:08,787 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-01-06 16:22:08,788 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-01-06 16:22:08,788 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-01-06 16:22:08,788 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-01-06 16:22:08,788 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-01-06 16:22:08,789 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-01-06 16:22:08,789 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-01-06 16:22:08,789 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-01-06 16:22:08,789 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-01-06 16:22:08,790 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-01-06 16:22:08,790 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-01-06 16:22:08,790 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-01-06 16:22:09,315 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-01-06 16:22:09,353 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-01-06 16:22:09,356 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-01-06 16:22:09,358 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-01-06 16:22:09,359 INFO  L275        PluginConnector]: CDTParser initialized
[2021-01-06 16:22:09,361 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_add-1.i
[2021-01-06 16:22:09,452 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ecd1edea1/0fda904369644524a20e42f276842203/FLAG81c222fe5
[2021-01-06 16:22:10,303 INFO  L306              CDTParser]: Found 1 translation units.
[2021-01-06 16:22:10,303 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-1.i
[2021-01-06 16:22:10,324 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ecd1edea1/0fda904369644524a20e42f276842203/FLAG81c222fe5
[2021-01-06 16:22:10,540 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ecd1edea1/0fda904369644524a20e42f276842203
[2021-01-06 16:22:10,547 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-01-06 16:22:10,550 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-01-06 16:22:10,556 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-01-06 16:22:10,556 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-01-06 16:22:10,561 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-01-06 16:22:10,563 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:22:10" (1/1) ...
[2021-01-06 16:22:10,566 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3803a8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:10, skipping insertion in model container
[2021-01-06 16:22:10,567 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:22:10" (1/1) ...
[2021-01-06 16:22:10,576 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-01-06 16:22:10,660 INFO  L178         MainTranslator]: Built tables and reachable declarations
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~list,<LOCAL,LDV_INIT_LIST_HEAD>],base],StructAccessExpression[IdentifierExpression[~list,<LOCAL,LDV_INIT_LIST_HEAD>],offset]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~list,<LOCAL,LDV_INIT_LIST_HEAD>],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~list,<LOCAL,LDV_INIT_LIST_HEAD>],offset]]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~next,<LOCAL,__ldv_list_add>],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~next,<LOCAL,__ldv_list_add>],offset]]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new,<LOCAL,__ldv_list_add>],base],StructAccessExpression[IdentifierExpression[~new,<LOCAL,__ldv_list_add>],offset]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new,<LOCAL,__ldv_list_add>],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~new,<LOCAL,__ldv_list_add>],offset]]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~prev,<LOCAL,__ldv_list_add>],base],StructAccessExpression[IdentifierExpression[~prev,<LOCAL,__ldv_list_add>],offset]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~next,<LOCAL,__ldv_list_del>],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~next,<LOCAL,__ldv_list_del>],offset]]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~prev,<LOCAL,__ldv_list_del>],base],StructAccessExpression[IdentifierExpression[~prev,<LOCAL,__ldv_list_del>],offset]]]
left hand side expression in assignment: lhs: VariableLHS[~le~0,<LOCAL,ldv_set_add>]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~le~0,<LOCAL,ldv_set_add>],base],StructAccessExpression[IdentifierExpression[~le~0,<LOCAL,ldv_set_add>],offset]]]
left hand side expression in assignment: lhs: VariableLHS[~m~0,<LOCAL,ldv_set_del>]
left hand side expression in assignment: lhs: VariableLHS[~n~0,<LOCAL,ldv_set_del>]
left hand side expression in assignment: lhs: VariableLHS[~m~0,<LOCAL,ldv_set_del>]
left hand side expression in assignment: lhs: VariableLHS[~n~0,<LOCAL,ldv_set_del>]
left hand side expression in assignment: lhs: VariableLHS[~m~1,<LOCAL,ldv_is_in_set>]
left hand side expression in assignment: lhs: VariableLHS[~m~1,<LOCAL,ldv_is_in_set>]
[2021-01-06 16:22:11,148 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-1.i[25792,25805]
[2021-01-06 16:22:11,156 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-01-06 16:22:11,166 INFO  L203         MainTranslator]: Completed pre-run
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~list,<LOCAL,LDV_INIT_LIST_HEAD>],base],StructAccessExpression[IdentifierExpression[~list,<LOCAL,LDV_INIT_LIST_HEAD>],offset]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~list,<LOCAL,LDV_INIT_LIST_HEAD>],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~list,<LOCAL,LDV_INIT_LIST_HEAD>],offset]]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~next,<LOCAL,__ldv_list_add>],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~next,<LOCAL,__ldv_list_add>],offset]]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new,<LOCAL,__ldv_list_add>],base],StructAccessExpression[IdentifierExpression[~new,<LOCAL,__ldv_list_add>],offset]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~new,<LOCAL,__ldv_list_add>],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~new,<LOCAL,__ldv_list_add>],offset]]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~prev,<LOCAL,__ldv_list_add>],base],StructAccessExpression[IdentifierExpression[~prev,<LOCAL,__ldv_list_add>],offset]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~next,<LOCAL,__ldv_list_del>],base],BinaryExpression[ARITHPLUS,IntegerLiteral[8],StructAccessExpression[IdentifierExpression[~next,<LOCAL,__ldv_list_del>],offset]]]]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~prev,<LOCAL,__ldv_list_del>],base],StructAccessExpression[IdentifierExpression[~prev,<LOCAL,__ldv_list_del>],offset]]]
left hand side expression in assignment: lhs: VariableLHS[~le~0,<LOCAL,ldv_set_add>]
left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~le~0,<LOCAL,ldv_set_add>],base],StructAccessExpression[IdentifierExpression[~le~0,<LOCAL,ldv_set_add>],offset]]]
left hand side expression in assignment: lhs: VariableLHS[~m~0,<LOCAL,ldv_set_del>]
left hand side expression in assignment: lhs: VariableLHS[~n~0,<LOCAL,ldv_set_del>]
left hand side expression in assignment: lhs: VariableLHS[~m~0,<LOCAL,ldv_set_del>]
left hand side expression in assignment: lhs: VariableLHS[~n~0,<LOCAL,ldv_set_del>]
left hand side expression in assignment: lhs: VariableLHS[~m~1,<LOCAL,ldv_is_in_set>]
left hand side expression in assignment: lhs: VariableLHS[~m~1,<LOCAL,ldv_is_in_set>]
[2021-01-06 16:22:11,223 WARN  L226   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-1.i[25792,25805]
[2021-01-06 16:22:11,224 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-01-06 16:22:11,357 INFO  L208         MainTranslator]: Completed translation
[2021-01-06 16:22:11,357 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:11 WrapperNode
[2021-01-06 16:22:11,357 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-01-06 16:22:11,366 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-01-06 16:22:11,367 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-01-06 16:22:11,367 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-01-06 16:22:11,377 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:11" (1/1) ...
[2021-01-06 16:22:11,416 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:11" (1/1) ...
[2021-01-06 16:22:11,453 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-01-06 16:22:11,454 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-01-06 16:22:11,455 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-01-06 16:22:11,455 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-01-06 16:22:11,465 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:11" (1/1) ...
[2021-01-06 16:22:11,466 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:11" (1/1) ...
[2021-01-06 16:22:11,469 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:11" (1/1) ...
[2021-01-06 16:22:11,470 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:11" (1/1) ...
[2021-01-06 16:22:11,480 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:11" (1/1) ...
[2021-01-06 16:22:11,485 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:11" (1/1) ...
[2021-01-06 16:22:11,487 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:11" (1/1) ...
[2021-01-06 16:22:11,491 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-01-06 16:22:11,492 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-01-06 16:22:11,493 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-01-06 16:22:11,493 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-01-06 16:22:11,494 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:11" (1/1) ...
No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-01-06 16:22:11,596 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-01-06 16:22:11,596 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-01-06 16:22:11,596 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-01-06 16:22:11,596 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2021-01-06 16:22:11,597 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-01-06 16:22:11,597 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2021-01-06 16:22:11,597 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2021-01-06 16:22:11,597 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-01-06 16:22:11,597 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-01-06 16:22:11,597 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-01-06 16:22:12,055 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-01-06 16:22:12,057 INFO  L299             CfgBuilder]: Removed 22 assume(true) statements.
[2021-01-06 16:22:12,061 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:22:12 BoogieIcfgContainer
[2021-01-06 16:22:12,062 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-01-06 16:22:12,063 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-01-06 16:22:12,064 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-01-06 16:22:12,067 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-01-06 16:22:12,068 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:22:10" (1/3) ...
[2021-01-06 16:22:12,069 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58fab9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:22:12, skipping insertion in model container
[2021-01-06 16:22:12,070 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:22:11" (2/3) ...
[2021-01-06 16:22:12,070 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58fab9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:22:12, skipping insertion in model container
[2021-01-06 16:22:12,071 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:22:12" (3/3) ...
[2021-01-06 16:22:12,073 INFO  L111   eAbstractionObserver]: Analyzing ICFG test_add-1.i
[2021-01-06 16:22:12,080 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-01-06 16:22:12,088 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-01-06 16:22:12,111 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-01-06 16:22:12,138 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2021-01-06 16:22:12,139 INFO  L378      AbstractCegarLoop]: Hoare is true
[2021-01-06 16:22:12,139 INFO  L379      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-01-06 16:22:12,139 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-01-06 16:22:12,139 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-01-06 16:22:12,139 INFO  L382      AbstractCegarLoop]: Difference is false
[2021-01-06 16:22:12,139 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-01-06 16:22:12,139 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-01-06 16:22:12,155 INFO  L276                IsEmpty]: Start isEmpty. Operand 25 states.
[2021-01-06 16:22:12,164 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-01-06 16:22:12,164 INFO  L414         BasicCegarLoop]: Found error trace
[2021-01-06 16:22:12,165 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-06 16:22:12,166 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-01-06 16:22:12,173 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-01-06 16:22:12,174 INFO  L82        PathProgramCache]: Analyzing trace with hash 1191041087, now seen corresponding path program 1 times
[2021-01-06 16:22:12,185 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-06 16:22:12,185 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131975794]
[2021-01-06 16:22:12,186 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-06 16:22:12,385 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-06 16:22:12,497 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-06 16:22:12,498 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131975794]
[2021-01-06 16:22:12,499 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-01-06 16:22:12,500 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-01-06 16:22:12,500 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006486260]
[2021-01-06 16:22:12,508 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 2 states
[2021-01-06 16:22:12,509 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-06 16:22:12,529 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-01-06 16:22:12,531 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-01-06 16:22:12,533 INFO  L87              Difference]: Start difference. First operand 25 states. Second operand 2 states.
[2021-01-06 16:22:12,564 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-06 16:22:12,564 INFO  L93              Difference]: Finished difference Result 45 states and 58 transitions.
[2021-01-06 16:22:12,565 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-01-06 16:22:12,566 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 12
[2021-01-06 16:22:12,567 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-06 16:22:12,587 INFO  L225             Difference]: With dead ends: 45
[2021-01-06 16:22:12,588 INFO  L226             Difference]: Without dead ends: 21
[2021-01-06 16:22:12,592 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-01-06 16:22:12,613 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2021-01-06 16:22:12,628 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2021-01-06 16:22:12,629 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2021-01-06 16:22:12,632 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions.
[2021-01-06 16:22:12,634 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12
[2021-01-06 16:22:12,635 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-01-06 16:22:12,637 INFO  L481      AbstractCegarLoop]: Abstraction has 21 states and 25 transitions.
[2021-01-06 16:22:12,637 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2021-01-06 16:22:12,637 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions.
[2021-01-06 16:22:12,638 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-01-06 16:22:12,638 INFO  L414         BasicCegarLoop]: Found error trace
[2021-01-06 16:22:12,638 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-06 16:22:12,639 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-01-06 16:22:12,640 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-01-06 16:22:12,643 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-01-06 16:22:12,643 INFO  L82        PathProgramCache]: Analyzing trace with hash -942277654, now seen corresponding path program 1 times
[2021-01-06 16:22:12,644 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-06 16:22:12,644 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149549291]
[2021-01-06 16:22:12,644 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-06 16:22:12,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-06 16:22:12,814 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-06 16:22:12,815 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149549291]
[2021-01-06 16:22:12,815 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-01-06 16:22:12,815 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-01-06 16:22:12,817 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580204519]
[2021-01-06 16:22:12,818 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-01-06 16:22:12,818 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-06 16:22:12,821 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-01-06 16:22:12,821 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-01-06 16:22:12,822 INFO  L87              Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 4 states.
[2021-01-06 16:22:12,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-06 16:22:12,891 INFO  L93              Difference]: Finished difference Result 41 states and 46 transitions.
[2021-01-06 16:22:12,891 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-01-06 16:22:12,892 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 12
[2021-01-06 16:22:12,892 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-06 16:22:12,893 INFO  L225             Difference]: With dead ends: 41
[2021-01-06 16:22:12,893 INFO  L226             Difference]: Without dead ends: 32
[2021-01-06 16:22:12,894 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-01-06 16:22:12,895 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2021-01-06 16:22:12,899 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23.
[2021-01-06 16:22:12,899 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 23 states.
[2021-01-06 16:22:12,900 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2021-01-06 16:22:12,900 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12
[2021-01-06 16:22:12,901 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-01-06 16:22:12,901 INFO  L481      AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2021-01-06 16:22:12,901 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-01-06 16:22:12,901 INFO  L276                IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2021-01-06 16:22:12,902 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-01-06 16:22:12,902 INFO  L414         BasicCegarLoop]: Found error trace
[2021-01-06 16:22:12,902 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-06 16:22:12,902 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-01-06 16:22:12,903 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-01-06 16:22:12,903 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-01-06 16:22:12,903 INFO  L82        PathProgramCache]: Analyzing trace with hash 239429152, now seen corresponding path program 1 times
[2021-01-06 16:22:12,904 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-06 16:22:12,904 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769792737]
[2021-01-06 16:22:12,904 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-06 16:22:12,924 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-06 16:22:12,953 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-06 16:22:12,953 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769792737]
[2021-01-06 16:22:12,954 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-01-06 16:22:12,954 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-01-06 16:22:12,954 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669729583]
[2021-01-06 16:22:12,955 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-01-06 16:22:12,955 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-06 16:22:12,956 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-01-06 16:22:12,956 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-01-06 16:22:12,956 INFO  L87              Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states.
[2021-01-06 16:22:12,996 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-06 16:22:12,996 INFO  L93              Difference]: Finished difference Result 32 states and 35 transitions.
[2021-01-06 16:22:12,997 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-01-06 16:22:12,997 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 12
[2021-01-06 16:22:12,997 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-06 16:22:12,998 INFO  L225             Difference]: With dead ends: 32
[2021-01-06 16:22:12,998 INFO  L226             Difference]: Without dead ends: 27
[2021-01-06 16:22:12,999 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-01-06 16:22:12,999 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-01-06 16:22:13,002 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22.
[2021-01-06 16:22:13,003 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2021-01-06 16:22:13,003 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions.
[2021-01-06 16:22:13,004 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12
[2021-01-06 16:22:13,004 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-01-06 16:22:13,004 INFO  L481      AbstractCegarLoop]: Abstraction has 22 states and 25 transitions.
[2021-01-06 16:22:13,004 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-01-06 16:22:13,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions.
[2021-01-06 16:22:13,005 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-01-06 16:22:13,005 INFO  L414         BasicCegarLoop]: Found error trace
[2021-01-06 16:22:13,005 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-06 16:22:13,006 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-01-06 16:22:13,006 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-01-06 16:22:13,006 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-01-06 16:22:13,007 INFO  L82        PathProgramCache]: Analyzing trace with hash 241037866, now seen corresponding path program 1 times
[2021-01-06 16:22:13,007 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-06 16:22:13,007 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897006373]
[2021-01-06 16:22:13,007 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-06 16:22:13,031 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-01-06 16:22:13,112 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-01-06 16:22:13,112 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897006373]
[2021-01-06 16:22:13,113 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-01-06 16:22:13,114 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-01-06 16:22:13,114 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700110393]
[2021-01-06 16:22:13,114 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-01-06 16:22:13,115 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-01-06 16:22:13,116 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-01-06 16:22:13,117 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-01-06 16:22:13,118 INFO  L87              Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 4 states.
[2021-01-06 16:22:13,232 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-01-06 16:22:13,232 INFO  L93              Difference]: Finished difference Result 38 states and 42 transitions.
[2021-01-06 16:22:13,233 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-01-06 16:22:13,233 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 12
[2021-01-06 16:22:13,234 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2021-01-06 16:22:13,234 INFO  L225             Difference]: With dead ends: 38
[2021-01-06 16:22:13,234 INFO  L226             Difference]: Without dead ends: 18
[2021-01-06 16:22:13,235 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-01-06 16:22:13,236 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2021-01-06 16:22:13,241 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2021-01-06 16:22:13,242 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2021-01-06 16:22:13,243 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions.
[2021-01-06 16:22:13,243 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12
[2021-01-06 16:22:13,243 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2021-01-06 16:22:13,243 INFO  L481      AbstractCegarLoop]: Abstraction has 18 states and 18 transitions.
[2021-01-06 16:22:13,243 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-01-06 16:22:13,244 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions.
[2021-01-06 16:22:13,245 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2021-01-06 16:22:13,245 INFO  L414         BasicCegarLoop]: Found error trace
[2021-01-06 16:22:13,246 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-01-06 16:22:13,246 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-01-06 16:22:13,246 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-01-06 16:22:13,247 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-01-06 16:22:13,247 INFO  L82        PathProgramCache]: Analyzing trace with hash 1233808810, now seen corresponding path program 1 times
[2021-01-06 16:22:13,247 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-01-06 16:22:13,248 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595093630]
[2021-01-06 16:22:13,248 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-01-06 16:22:13,365 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-01-06 16:22:13,365 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-01-06 16:22:13,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-01-06 16:22:13,440 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-01-06 16:22:13,478 INFO  L173   FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-01-06 16:22:13,478 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2021-01-06 16:22:13,478 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-01-06 16:22:13,532 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:22:13 BoogieIcfgContainer
[2021-01-06 16:22:13,532 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-01-06 16:22:13,533 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-01-06 16:22:13,533 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-01-06 16:22:13,533 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-01-06 16:22:13,534 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:22:12" (3/4) ...
[2021-01-06 16:22:13,542 INFO  L131         WitnessPrinter]: Generating witness for reachability counterexample
[2021-01-06 16:22:13,635 INFO  L141         WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-sets/test_add-1.i-witness.graphml
[2021-01-06 16:22:13,635 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-01-06 16:22:13,637 INFO  L168              Benchmark]: Toolchain (without parser) took 3087.02 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 119.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 8.0 GB.
[2021-01-06 16:22:13,638 INFO  L168              Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-01-06 16:22:13,639 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 801.84 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 130.1 MB in the end (delta: -5.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 8.0 GB.
[2021-01-06 16:22:13,643 INFO  L168              Benchmark]: Boogie Procedure Inliner took 87.19 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 128.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-01-06 16:22:13,647 INFO  L168              Benchmark]: Boogie Preprocessor took 37.24 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 126.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-01-06 16:22:13,647 INFO  L168              Benchmark]: RCFGBuilder took 569.55 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 102.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB.
[2021-01-06 16:22:13,648 INFO  L168              Benchmark]: TraceAbstraction took 1468.70 ms. Allocated memory is still 151.0 MB. Free memory was 102.3 MB in the beginning and 123.4 MB in the end (delta: -21.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB.
[2021-01-06 16:22:13,649 INFO  L168              Benchmark]: Witness Printer took 102.66 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 119.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB.
[2021-01-06 16:22:13,657 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.35 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 801.84 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 130.1 MB in the end (delta: -5.4 MB). Peak memory consumption was 25.7 MB. Max. memory is 8.0 GB.
 * Boogie Procedure Inliner took 87.19 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 128.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 37.24 ms. Allocated memory is still 151.0 MB. Free memory was 128.0 MB in the beginning and 126.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 569.55 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 102.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 1468.70 ms. Allocated memory is still 151.0 MB. Free memory was 102.3 MB in the beginning and 123.4 MB in the end (delta: -21.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB.
 * Witness Printer took 102.66 ms. Allocated memory is still 151.0 MB. Free memory was 123.4 MB in the beginning and 119.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 667]: a call to reach_error is reachable
    a call to reach_error is reachable
We found a FailurePath: 
[L662]              struct ldv_list_head s1 = { &(s1), &(s1) };
        VAL         [s1={6:0}]
[L665]              int j = __VERIFIER_nondet_int();
[L651]              struct ldv_list_element *m;
[L652]  EXPR        (s)->next
[L652]              const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next);
[L652]              m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );})
        VAL         [s1={6:0}]
[L652]  COND FALSE  !(&m->list != (s))
        VAL         [s1={6:0}]
[L657]              return 0;
        VAL         [s1={6:0}]
[L633]  COND TRUE   !ldv_is_in_set(new, s)
[L634]              struct ldv_list_element *le;
[L576]              void *ptr = malloc(size);
[L565]  COND FALSE  !(!cond)
        VAL         [s1={6:0}]
[L578]              return ptr;
        VAL         [s1={6:0}]
[L635]              le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element))
[L636]              le->e = new
[L605]              head->next
[L593]              next->prev = new
[L594]              new->next = next
[L595]              new->prev = prev
[L596]              prev->next = new
        VAL         [s1={6:0}]
[L651]              struct ldv_list_element *m;
[L652]  EXPR        (s)->next
[L652]              const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next);
[L652]              m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );})
        VAL         [s1={6:0}]
[L652]  COND TRUE   &m->list != (s)
[L653]  EXPR        m->e
        VAL         [s1={6:0}]
[L653]  COND TRUE   m->e == e
[L654]              return 1;
        VAL         [s1={6:0}]
[L667]  COND TRUE   ldv_is_in_set(j, &s1)
[L667]              reach_error()
        VAL         [s1={6:0}]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 27 SDslu, 90 SDs, 0 SdLazy, 37 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1584 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...